优思建筑设计有限公司，简称UCA，是一家国际知名综合性建筑及城市设计顾问机构。
UCA于1991年成立于维也纳原名freiTraum LTD.，2001年总部迁至洛杉矶，2006年起进入亚洲市场，并于2010年成立北京办公室。
UCA的业务涵盖商业、办公、住宅、文化设施、医疗、酒店等多种类型的建筑设计，以及城市设计，旅游景观规划，室内设计等。
UCA进入中国市场后专注于超高层商业办公综合体和养老地产设计，到目前为止，已在中国境内完成该类型项目百万平米。
UCA的主要成员同时致力于中国政治经济条件下的实用性建筑市场及理论研究，并先后任教于UCLA, 北京建筑大学，人民大学等多所院校，是既具有国际化视野又了解本土市场的专业化顾问团队。
自2010年起UCA与清华大学建筑设计研究院有限公司和北京炎黄联合国际工程设计有限公司结成战略合作伙伴关系，共同开拓中国市场，目前已经在北京、上海等地开展了一系列大型项目。
Unite-Architects (UCA) is an internationally known design and consultation organization for both general architectural design and urban planning.
UCA was founded in Vienna, Austria in 1991, with its former name freiTraum Ltd. In 2001 it relocated its headquarter to Los Angeles, in 2006 started entering the Asian market, and by 2010 established its Beijing office.
UCA has its interests in multiple types of building design including commercial, office, Residential, cultural, health, hotel, etc. UCA is also an expert at urban planning, landscape planning, and interior design.
After entering Chinese market, UCA has focused mainly on high rise commercial-office mixed-use buildings and healthcare real estate design, up to now, it has designed more than one million square meters of these types within the Chinese borders.
Meanwhile, the main members of UCA have dedicated to the practical architectural design market and theory research under the Chinese political and economical conditions, they have been teaching in many universities such as UCLA, Beijing University of Civil Engineering and Architecture, and Renmin University of China. It is a consultation team that not only has international visions but also understands the local Chinese market.
Since 2010, UCA has become a strategy cooperation partner to Architectural Design and Research Institute of Tsinghua University Co., Ltd. and Beijing Yanhuang International Architectural & Engineering Co., Ltd. to jointly explore the Chinese market, until now many large-scale projects have been carried out by their combined efforts.
